I used fraps to check the frame rate. When the game ran with normal speed, the frame rate was 60 but not stable. In occasions it dropped to around 50, and there was significant lag when it fell below 50. I used Yie Ar Kung-Fu for the test.

請試試有沒有幫助Please try to see if it helps your case.

更新 2014-9-30:Update 2014-9-30:在顯示引擎加了一個小的速度的修改。Added a small speed fix to the render engine.

Tested with the 30/9 version.Testing with the same game, there is a small improvement with the speed. The frame rate still won't stay at 60 but it rarely drops below 50.Did author test it yourself? Does it has the same problem as mine?

在正常運作的時候，我沒有遇到模擬器拖慢的现象。只有在開發或錄影時才有這個問題。在開發時帧数原本就已經遠遠低於60，所以這個修正是有幫助但仍沒有60fps。I don't have the lag problem when running the emulator normally, I only have that problem when debugging or recording. During debugging, the frame rate was far below 60 before, so the fix helps but still no 60 fps.

Hey mkwong. Do you think it would be possible to add APNG support to the emulator? I had someone ask me recently if it would be possible to add extra animations this way. I found this code http://sourceforge.net/projects/libpng-apng/ and compiled a libpng dll *link removed*. So far everything works but the animation doesn't play. I think it has to do with the way the image is loaded into memory or it has to be defined in the source code. Either way it would be cool if this can work because then we could add idle animations to sprites if they stand still long enough or have pulsing colors or other changes on something that isn't normally animated like background tiles.

edit:After looking into this more in-depth it seems like it wouldn't work anyways. APNG is not developed very much and finding SDL_image support and getting it to work is nigh impossible (at least for me). It probably would be better to come up with our own animation system in a traditional sense with multiple images per sheets that it scrolls through.

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